/Engine/Plugins/Animation/ControlRig/Source/ControlRigEditor/Public/ControlRigThumbnailRenderer.h
BeginUThumbnailRendererObject.
virtual void Draw ( [UObject](API\Runtime\CoreUObject\UObject\UObject) * Object, int32 X, int32 Y, uint32 Width, uint32 Height, [FRenderTarget](API\Runtime\Engine\FRenderTarget) *, [FCanvas](API\Runtime\Engine\FCanvas) * Canvas, bool bAdditionalViewFamily )